diff options
Diffstat (limited to 'batctl/patches/0006-batctl-Handle-nlmsg_alloc-errors.patch')
| -rw-r--r-- | batctl/patches/0006-batctl-Handle-nlmsg_alloc-errors.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/batctl/patches/0006-batctl-Handle-nlmsg_alloc-errors.patch b/batctl/patches/0006-batctl-Handle-nlmsg_alloc-errors.patch new file mode 100644 index 0000000..ec43338 --- /dev/null +++ b/batctl/patches/0006-batctl-Handle-nlmsg_alloc-errors.patch @@ -0,0 +1,63 @@ +From: Sven Eckelmann <sven.eckelmann@openmesh.com> +Date: Thu, 23 Nov 2017 15:04:38 +0100 +Subject: [PATCH] batctl: Handle nlmsg_alloc errors + +nlmsg_alloc may return NULL on errors. The processing has to be aborted +when this happens. + +Fixes: d8dd1ff1a0fe ("batctl: Use netlink to replace some of debugfs") +Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> +Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> + +Origin: upstream, https://git.open-mesh.org/batctl.git/commit/27e9937635ffbfe33f7f3297aff911718b8deb56 +--- + netlink.c | 15 +++++++++++++++ + 1 file changed, 15 insertions(+) + +diff --git a/netlink.c b/netlink.c +index 5f4325b0bb6b4a41860a75bd0851e446c5af9a88..64afeedac46bf3eab14a1d89d7db4491fbef8d81 100644 +--- a/netlink.c ++++ b/netlink.c +@@ -302,6 +302,11 @@ static char *netlink_get_info(int ifindex, uint8_t nl_cmd, const char *header) + return NULL; + + msg = nlmsg_alloc(); ++ if (!msg) { ++ nl_socket_free(sock); ++ return NULL; ++ } ++ + genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, 0, + BATADV_CMD_GET_MESH_INFO, 1); + +@@ -399,6 +404,11 @@ int netlink_print_routing_algos(void) + return -EOPNOTSUPP; + + msg = nlmsg_alloc(); ++ if (!msg) { ++ last_err = -ENOMEM; ++ goto err_free_sock; ++ } ++ + genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, NLM_F_DUMP, + BATADV_CMD_GET_ROUTING_ALGOS, 1); + +@@ -415,6 +425,8 @@ int netlink_print_routing_algos(void) + nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL); + + nl_recvmsgs(sock, cb); ++ ++err_free_sock: + nl_socket_free(sock); + + if (!last_err) +@@ -1131,6 +1143,9 @@ static int netlink_print_common(char *mesh_iface, char *orig_iface, + header); + + msg = nlmsg_alloc(); ++ if (!msg) ++ continue; ++ + genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, + NLM_F_DUMP, nl_cmd, 1); + |